Maybe I can finally get a whois onebox with a subscribed gadget in my search page.

Ahh, finally Google has found a way to integrate OpenSearch, however ungracefully. This has the potential to make Google Search like a feed reader for other search engines, big or small.

More on Google's explanation page, and here: http://www.opensearch.org

I think this could be huge, but no one has written about the potential implications.